| Resource Name |
Landscape controls on phosphorus loading to boreal lakes: implications for the potential impacts of forest harvesting |
| Unique File Number |
327 |
| Information Type |
applied Research |
| Surface Water |
A |
| Aquatic Ecosystem |
A |
| Groundwater |
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| Groundwater & Surface Water |
A |
| Management for Natural & Industrial Hazards |
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| Strengths |
examines the role of hydrologic connectivity and lake water quality. Specifically examines role of location of lake within groundwater flow system. Discusses complex surface water - ground water interactions. |
| Limitations |
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| Challenges |
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| Outstanding Research Questions |
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| Outstanding Research Questions |
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| Information Subtype |
boreal hydrology |
| Organization |
TROLS Project |
| Resource Name |
Devito, KJ et al. 2000. Landscape controls on phosphorus loading to boreal lakes: implications for the potential impacts of forest harvesting. Canadian Journal of Fisheries and Aquatic Sciences, 2000, 57(10): 1977-1984, 10.1139/f00-148 |
| Resource Purpose |
For 12 low-order lakes in the Western Boreal Forest of Canada, lake position in the groundwater flow system and surface hydrologic connection to wetlands accounted for 57% of the variation in the change in postharvest (1997) relative to preharvest (1996) open-water median total phosphorous concentration ([TP]). Changes in [TP] decreased with calcium and magnesium concentrations, indicating that the largest increases in [TP] are likely to occur in lakes located in areas of groundwater recharge or shallow local discharge. Changes in [TP] increased with the area of wetland connected to the lake, a measure of near-surface hydrologic flushing of TP to the lake. However, the remaining variation (43%) in the TP response of lakes to harvest was not explained by landscape-based criteria. This study illustrates that in landscapes with complex hydrogeology, factors controlling the chemical responses of lakes to disturbance are complex, remain poorly understood, and require further study. |
| Type of Information |
article |
| How does this help decision making? |
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| Program Status |
complete |
| NE Coverage |
boreal Plains |
| Drinking Water |
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| Ecosystem |
y |
| Fish |
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| Groundwater |
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| Public Safety |
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| SW Quality |
y |
| SW Quantity |
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| Link |
http://www.nrcresearchpress.com/doi/abs/10.1139/f00-148#.UyJcNT9dWSp |
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